A. glutinosa is a tree that thrives in moist soils, and grows under favourable circumstances to a height of 20 to 30 metres (66 to 98 feet) and exceptionally up to 37 m (121 ft). Young trees have an upright habit of … See more

A. glutinosa was first described by Carl Linnaeus in 1753, as one of two varieties of alder (the other being Alnus incana), which he regarded as a single species Betula alnus. In 1785, Jean-Baptiste Lamarck treated it as a full species under the name Betula glutinosa. Its … See more

The common alder is most noted for its symbiotic relationship with the bacterium Frankia alni, which forms nodules on the tree's roots. This bacterium absorbs nitrogen from the air and fixes it in a form available to the tree. In return, the bacterium receives … See more

• Alnus glutinosa - distribution map, genetic conservation units and related resources. European Forest Genetic Resources Programme (EUFORGEN)
• Media related to Alnus glutinosa at Wikimedia Commons
• Data related to Alnus glutinosa at Wikispecies See more

The common alder is native to almost the whole of continental Europe (except for both the extreme north and south) as well as the United Kingdom and Ireland. In Asia its range includes See more

Pollen from the common alder, along with that from birch and hazel, is one of the many sources of tree pollen allergy. As the pollen is often present in the atmosphere at the same time as … See more

The common alder is used as a pioneer species and to stabilise river banks, to assist in flood control, to purify water in waterlogged soils and to moderate the temperature and nutrient status of water bodies. It can be grown by itself or in mixed species … See more